I am glad you are drawing attention to the problem of images being used without permission. All images should show the correct source (which means the photographer who is THE SOURCE, not the place where the image was already being used). Of course, stating a source, never gives you the right to use the image! Only the copyright holder has that right. Stating a source, only fulfills Steemit's requirement that the images are not plagiarized (which is not illegal, but copyright infringement is.)
Photographers on Pixabay have given up those rights, but BEWARE - not all photos on Pixabay belong to the people who uploaded them! It is the USER's responsibility to double check that the images they use from Pixabay actually belong there.
The terms of service on Pixabay say that the Uploader must make sure that the images are not copyright. But the USER is also responsible in a court of law - and not knowing is not an excuse!
I didn't realize this thanks for sharing!
You are welcome. Not enough is done on Steemit to educate about Copright. I try to do that every now and again, but it's not a very popular subject - for obvious reasons. LOL! Just give a source and you can use anything you like from the web - NOT! LOL!